Sybase ASE：通过查询获取REAL PK和FK的列表

Question

我有一些带有主键和外键的Sybase ASE表，我想获得这些表的REAL PK和FK列表。这个信息应该通过SELECT查询返回给系统表。 由于syskeys仅包含通过sp_foreignkey创建的表的逻辑引用，所以对“syskeys”使用查询的所有查询均不正确。 例如，我有如下表：

create table tbl_pk1 
(col1 int primary key, 
col2 int); 

create table tbl_pk3 
(col1 int null, 
col2 int); 

sp_primarykey 'tbl_pk3', 'col1' 

而且下面的查询将返回唯一的“tbl_pk3”。

select t.name from syskeys i INNER JOIN sysobjects t ON i.id = t.id where t.name in ('tbl_pk1', 'tbl_pk3') 

我知道什么是“sp_helpconstraint可将”程序可以帮助我，但我不能把它SELECT。 也许有人可以帮助我查询系统表以获取有关表的主键和外键的实际信息？

Answer 1

下面是它如何可以做到

select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 1) column_name, 1 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 1) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 2) column_name, 2 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 2) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 3) column_name, 3 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 3) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 4) column_name, 4 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 4) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 5) column_name, 5 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 5) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 6) column_name, 6 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 6) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 7) column_name, 7 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 7) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 8) column_name, 8 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 8) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 9) column_name, 9 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 9) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 10) column_name, 10 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 10) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 11) column_name, 11 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 11) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 12) column_name, 12 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 12) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 13) column_name, 13 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 13) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 14) column_name, 14 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 14) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 15) column_name, 15 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 15) is not null   union   
select user_name(o.uid) user_name, object_name(i.id) table_name, index_col(object_name(i.id), i.indid, 16) column_name, 16 column_id, i.name as con_name 
    from sysindexes i, sysobjects o where object_name(i.id) = 'tbl_pk_mult' and user_name(o.uid) = 'dbo' and status & 2048 = 2048 and i.id = o.id and index_col(object_name(i.id), i.indid, 16) is not null   

Answer 2

我使用Sybase ASA（不是ASE），但可以尝试此查询（它适用于ASA）。

对于外键：

select f.* from sys.systable t 
join sys.SYSFOREIGNKEY f on t.table_id=f.primary_table_id 
where t.table_name='xxx' 

主键：

select c.* from sys.systable t 
join sys.SYSCONSTRAINT c on t.object_id=c.table_object_id 
where t.table_name='xxx' and c.constraint_type='P'